Samples were collected twice Autumn 2018 and Winter 2019, from nine stations were chosen to collect bottom fauna to cover the area of study around sewage pipeline of an oil company in Gable El Zeit, Gulf of Suez. The bottom fauna of the study area consist of 8 taxonomic groups of invertebrate. These groups are Foraminifera, Nematoda, Polychaeta, Bivalvia, Gastropoda, Cumacea, Isopoda and Amphipoda. Due to the importance of macro invertebrate in bio monitoring environmental studies. This study are considered as a step to study bottom fauna present in this area around the sewage Pipeline for  an oil company  in Gable El Zeit area, as an environmental assessment of this part, with focusing on the polychaete group. The results came out that the stations far away from the drainage pipe are better than nearby also  results of some invertebrate  groups such as foraminifera, mollusks, polychaetes answer all questions and detected which can used as biomarker of hydrocarbon contamination.